Browsing School of Physics and Astronomy by Subject "dark ages, reionization, first stars"
Now showing items 1-5 of 5
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DAYENU: a simple filter of smooth foregrounds for intensity mapping power spectra
(Oxford University Press, 2020-10)We introduce DPSS Approximate lazY filtEriNg of foregroUnds (DAYENU), a linear, spectral filter for H I intensity mapping that achieves the desirable foreground mitigation and error minimization properties of inverse ... -
The HERA-19 Commissioning Array: Direction-dependent Effects
(American Astronomical Society, 2019-09-01)Foreground power dominates the measurements of interferometers that seek a statistical detection of highly-redshifted H i emission from the Epoch of Reionization (EoR). The chromaticity of the instrument creates a boundary ... -
Redundant-baseline calibration of the hydrogen epoch of reionization array
(Oxford University Press, 2020-10)In 21-cm cosmology, precision calibration is key to the separation of the neutral hydrogen signal from very bright but spectrally smooth astrophysical foregrounds. The Hydrogen Epoch of Reionization Array (HERA), an ...